Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation
We investigated meso-zooplankton nutrient recycling as a driver of nitrogen deficiency for phytoplankton production in Arctic Alaskan lakes. Copepods and cladocerans differentially recycle inorganic nutrients based on nutrient demands for new tissue. Copepods typically sequester more nitrogen in the...
Published in: | Journal of Plankton Research |
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Oxford University Press
2012
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fthighwire:oai:open-archive.highwire.org:plankt:34/5/345 2023-05-15T14:56:18+02:00 Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation Johnson, Cody R. Luecke, Chris 2012-05-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/34/5/345 https://doi.org/10.1093/plankt/fbs009 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/34/5/345 http://dx.doi.org/10.1093/plankt/fbs009 Copyright (C) 2012, Oxford University Press FEATURED ARTICLE TEXT 2012 fthighwire https://doi.org/10.1093/plankt/fbs009 2013-05-27T02:44:54Z We investigated meso-zooplankton nutrient recycling as a driver of nitrogen deficiency for phytoplankton production in Arctic Alaskan lakes. Copepods and cladocerans differentially recycle inorganic nutrients based on nutrient demands for new tissue. Copepods typically sequester more nitrogen in the tissue, and can lead to nitrogen, relative to phosphorus, deficient conditions for primary production. Cladocerans sequester more phosphorus relative to nitrogen, potentially resulting in phosphorus deficiency for phytoplankton growth. We observed a positive relationship between meso-zooplankton communities with higher copepod relative to cladoceran biomass and levels of water column nitrogen deficiency. We also observed negative relationships between total precipitation over the 10 days prior to lake sampling and metrics of both nitrogen and phosphorus deficiency. These results support our predictions that relatively high watershed nutrient loading can overwhelm internal nutrient sources and sinks. However, when nutrient loading from the catchment is minimal meso-zooplankton community composition can affect nitrogen relative to phosphorus deficiency for primary production. Relationships between copepod biomass and nitrogen deficiency provide a potential mechanism for the high frequency of nitrogen limitation in Arctic Alaskan lakes. Text Arctic Phytoplankton Zooplankton Copepods HighWire Press (Stanford University) Arctic Journal of Plankton Research 34 5 345 355 |
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HighWire Press (Stanford University) |
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English |
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FEATURED ARTICLE Johnson, Cody R. Luecke, Chris Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation |
topic_facet |
FEATURED ARTICLE |
description |
We investigated meso-zooplankton nutrient recycling as a driver of nitrogen deficiency for phytoplankton production in Arctic Alaskan lakes. Copepods and cladocerans differentially recycle inorganic nutrients based on nutrient demands for new tissue. Copepods typically sequester more nitrogen in the tissue, and can lead to nitrogen, relative to phosphorus, deficient conditions for primary production. Cladocerans sequester more phosphorus relative to nitrogen, potentially resulting in phosphorus deficiency for phytoplankton growth. We observed a positive relationship between meso-zooplankton communities with higher copepod relative to cladoceran biomass and levels of water column nitrogen deficiency. We also observed negative relationships between total precipitation over the 10 days prior to lake sampling and metrics of both nitrogen and phosphorus deficiency. These results support our predictions that relatively high watershed nutrient loading can overwhelm internal nutrient sources and sinks. However, when nutrient loading from the catchment is minimal meso-zooplankton community composition can affect nitrogen relative to phosphorus deficiency for primary production. Relationships between copepod biomass and nitrogen deficiency provide a potential mechanism for the high frequency of nitrogen limitation in Arctic Alaskan lakes. |
format |
Text |
author |
Johnson, Cody R. Luecke, Chris |
author_facet |
Johnson, Cody R. Luecke, Chris |
author_sort |
Johnson, Cody R. |
title |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation |
title_short |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation |
title_full |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation |
title_fullStr |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation |
title_full_unstemmed |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation |
title_sort |
copepod dominance contributes to phytoplankton nitrogen deficiency in lakes during periods of low precipitation |
publisher |
Oxford University Press |
publishDate |
2012 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/34/5/345 https://doi.org/10.1093/plankt/fbs009 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Phytoplankton Zooplankton Copepods |
genre_facet |
Arctic Phytoplankton Zooplankton Copepods |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/34/5/345 http://dx.doi.org/10.1093/plankt/fbs009 |
op_rights |
Copyright (C) 2012, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/fbs009 |
container_title |
Journal of Plankton Research |
container_volume |
34 |
container_issue |
5 |
container_start_page |
345 |
op_container_end_page |
355 |
_version_ |
1766328315301330944 |